Advanced Documents
Advanced Documents, alternately called Collaborative Documents, or Documents Reimagined is a very dynamic, rapidly evolving set of tools that leap out from traditional personal productivity applications, notably Microsoft Word.
Most offer Realtime Collaboration, in which each individual can see where and what others are working on, jump in, help with content creation and edits. Most have a robust REST API, and have many One Click Integrations, which enable all kinds of Workflow Automations.
The current market leader is Notion, which boasts a massive user-base. The most feature-rich competitor to Notion is Coda, however Coda was acquired by Grammerly. Microsoft, which of course has the most massive business customer-base, has introduced Loop.
An early market entrant was Quip, quickly acquired by Salesforce and likely has strong integrations with the Salesforce platform and tooling, thus potentially being good for Sales Support.